It should be noted that the proxy host of the Embryo Project example you 
provided (embryo-ajp.lib.asu.edu) will be gone soon and all requests 
will be proxied from the actual Fedora server. FYI.

It should also be noted that the example is based on a locally patched 
version of Djatoka. The patch is on both the server and the veiwer. We 
are returning extra metadata from the server which indicates the actual 
pixel sizes of the zoom levels. The viewer than uses that info to pick 
the appropriate size to display as the preview image. This is not 
particularly germane to the Fedora integration discussion, but again, FYI.

Matt

--
Matt Cordial
Digital Library Software Engineer
Arizona State University Library
480-965-9094


Ryan M. Chute wrote:
> For those interested...
>
> The reference below provides a draft of one possible Fedora/djatoka 
> integration method. This is based on the existing service models used 
> within Fedora (i.e., the saxon service, image dissemination service, 
> etc). In short, the Fedora dissemination service constructs an OpenURL 
> for djatoka using the URL ref and user input parameters (if necessary) 
> and serves as the proxy agent for the response.
>
> These models expose three djatoka service/application methods:
> * getMetadata - Maps Fedora jp2SDef getMetadata method to djatoka 
> OpenURL getMetadata request
> * getRegion - Maps Fedora jp2SDef getRegion method and user parameters 
> to djatoka OpenURL getRegion request
> * getImageView - Maps Fedora jp2SDef getImageView method to a configured 
> djatoka Viewer instance. The Embryo Project 
> <http://embryo-ajp.lib.asu.edu/fedora/get/embryo:126994/embryo:ImageServices-SDef/getImageView>
>  
> Fedora instance uses this method mapping approach.
>
> -------------------------------------
> djatoka/Fedora Service Integration
> -------------------------------------
> http://apps.sourceforge.net/mediawiki/djatoka/index.php?title=Fedora_Integration
>
> -------------------------------------
> Questions
> -------------------------------------
> * What alternate implementations are possible?
> * Does this suite most use cases?
> * What are other use cases, appropriate to djatoka/Fedora Integration?
>
> Thanks,
> Ryan
>
>   

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